From ce66c6114fe347aefcd74ca55f73379feaf190fc Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Tue, 28 Apr 2009 22:05:13 +0000
Subject: [PATCH] As with r70333, give the primary induction variable a use so
 that it can't be trivially eliminated.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70334 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/Transforms/LoopSimplify/single-backedge.ll | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/test/Transforms/LoopSimplify/single-backedge.ll b/test/Transforms/LoopSimplify/single-backedge.ll
index 0c09b9e51a6..8391048eed2 100644
--- a/test/Transforms/LoopSimplify/single-backedge.ll
+++ b/test/Transforms/LoopSimplify/single-backedge.ll
@@ -8,7 +8,8 @@ define i32 @test(i1 %C) {
 ; <label>:0
 	br label %Loop
 Loop:		; preds = %BE2, %BE1, %0
-	%IV = phi i32 [ 1, %0 ], [ %IV2, %BE1 ], [ %IV2, %BE2 ]		; <i32> [#uses=1]
+	%IV = phi i32 [ 1, %0 ], [ %IV2, %BE1 ], [ %IV2, %BE2 ]		; <i32> [#uses=2]
+	store i32 %IV, i32* null
 	%IV2 = add i32 %IV, 2		; <i32> [#uses=2]
 	br i1 %C, label %BE1, label %BE2
 BE1:		; preds = %Loop
-- 
2.11.0